56564017 has 2 divisors, whose sum is σ = 56564018. Its totient is φ = 56564016.

The previous prime is 56563987. The next prime is 56564021. The reversal of 56564017 is 71046565.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52548001 + 4016016 = 7249^2 + 2004^2 .

It is a cyclic number.

It is not a de Polignac number, because 56564017 - 2¹⁵ = 56531249 is a prime.

It is equal to p_3369931 and since 56564017 and 3369931 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (56564617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28282008 + 28282009.

It is an arithmetic number, because the mean of its divisors is an integer number (28282009).

Almost surely, 2^56564017 is an apocalyptic number.

It is an amenable number.

56564017 is a deficient number, since it is larger than the sum of its proper divisors (1).

56564017 is an equidigital number, since it uses as much as digits as its factorization.

56564017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 56564017 is about 7520.9053311420. The cubic root of 56564017 is about 383.8663837244.

The spelling of 56564017 in words is "fifty-six million, five hundred sixty-four thousand, seventeen".